Elihu smith



E. SMITH. Magazine Stove.

Patented, April 13, 1869.

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WilnwJ J65 ELIHU SMITH, OF ALBANY, NEW YORK.

BASE-BURNING STOVE.

Specification forming part of Letters Patent No. 88,987, dated April 13, 1869.

To whom it may concern Be it known that I, ELIHU SMITH, of the city and county of Albany, and State of New York, have invented a new and useful Improvement in Heating Stoves and Furnaces; and I hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, making a part of this specification.

The said improvement consists, principally, in the organization and construction of heating-stoves, so as to create a circulation of air to be heated through the midst of the fire-pot, magazine, or combustion-chamber of the stove into the room to be heated, either from the top or the base of the stove, and also so as to create a circulation of air to be heated up through the base, the fire-pot, magazine, or combustion-chamber, and thence into the room to be heated thereby.

In the accompanying drawings, Figure 1 represents the external form and appearance of a heating-stove containing my said improvements. Fig. 2 represents a vertical sectional view of Fig. 1, showing the internal construction of said stove and the manner of applying my improvements thereto. Fig. 3 is a representation similar to Fig. 2, showing the relation of the fines for the circulation of air to the grate and fire-pot. Fig. 4 shows the lower portion of such stove, with fines, air-tubes, ashpan, circular fiues in the base, and fire-pot,

each in position. Fig. 5 shows the ash-pan in position in respect to the central air-tubes.

In Fig. 1, A represents the opening at the top of the stove, by means of which air, heated in passing up through the base, the fire-pot, and reservoir and combustion chamber, is heated and discharged upward into the room.

At the base of the stove, o in Fig. 1 shows the lower end of the flue through which the air from near thefloor enters, to be heated as above.

B represents the door closing the opening into the magazine. E in Fig. 1 represents that part of the case of the stove which covers the upper part of the magazine proper. 0 represents the mica light in the upper part of the combustion chamber. S S S, 850., are

openings through the external covering of the stove, admitting air to the sides of the firepot, to be heated thereby. D is the ash-drawer, and E E the base of the stove, external to the annular flue therein.

The operation of the stove is particularly represented. by Fig. 2 in the accompanying drawings. In this figure the upper and expanded portion of the magazine is represented at F F, showing the body of the coal in such magazine extending downward to the grate. The coal is fed into the magazine through the door at B. There may be a door on each side.

The combustion-chamber is seen at y y, surrounding the lower part of the magazine and extending upward nearly to its top.

At the sides of the fire-pot, extending downward into the annular flue in the base, are seen the perpendicular flues in the-base H H, and passing through such annular flue J J to the exit-pipe at Z air is admitted to the grate underneath the fire-pot by means of openings in the ash-pit, or by means of a register regulating the same. Air is also admitted to the combustion-chamber by means of openings or cross flues entering such chamber near the perpendicular flues The operation of the stove thus improved is as follows: A fire is kindled in the usual manner upon the grate. The coal is applied thereto moderately, until a sufficient temperature is produced to admit the filling the magazine through the door B. While kindling the fire the damper Z is opened to cause a direct draft to the exit-pipe. As soon as the fire is well kindled the damper Z is closed, and the products of combustion pass downward through the perpendicular flues to the annular flue in the base, and thence out through the exit-pipe at Z. As soon as combustion proceeds sufficiently the tube 1 r 1' becomes heated where it passes through the fire-pot, and the air therein, becoming heated, arises to pass up and out through the open space at p, and thence through A into the room. The air in the flue 1' r r, being heated, also heats the inner flue, 0 o 0, .&c., so that the air in 0 o 0, being heated, arises, causing cold air to rise in each of the flues o o o and r r 1' to supply the place of the heated air which has arisen to the upper part of the stove. As a consequence, currents of air will rush up through each of these fines to heat the room.

In addition to this mode of heating the rooms by these currents ascending upward, the current in flue 0 o 0 may be reversed by closing the damper p, when the heated air in r r r arises to the top of the chamber above the flues r r 1' and 0 0 0 and below the damper 10, and then reverting passes downward through the flue 0 0 0, and through the base into the room. 7

The stove may be used as a direct-draft or as a revertible-flue stove by the use of the damper Z, as will be manifest on mere inspection of the accompanying drawings.

Another improvement in the construction of my heating-stove is seen in the peculiar form of the external and upper portion of the magazine, whereby it is made to arch outward toward the outer casing of the stove, surrounding that part of the combustion-chamber, for the purpose of radiating the heat outward and downward against such outer casin g,

to heat the same, as shown, Fig. 2.

I do not claim, broadly, the idea of carrying air-pipes from the base of the stove through the combustion-chamber and reservoir.

Having thus fully described the nature of my said invention and improvement, I proceed to set forth my claim as follows:

1. I-claim the flues 7 r r and o 0 0 in combination, constructed substantially in the manner and for the purposes above described.

2; I claim the said flues,in combination with the damper p, as above set forth and described.

3. I claim said flues, in combination with the chamber K K, constructed in the manner substantially and for the purpose above described.

4. I claim the combination of the fines 1' r r and o 0 0 with the flues H H, constructed substantially in the manner and for the purpose above described.

ELIHU SMITH.

Witnesses:

J OEL TIFFANY, DANIEL KETGHUM. 

